UA 6378 then AA 6340 at Houston
Kansas City → Houston → Los Angeles
Timetable, Houston time
17:20UA 6378 from Kansas City at the gate
20:19AA 6340 to Los Angeles leaves the gate
2 h 59 apart on the timetable
The last days
UA 6378 and AA 6340 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.